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WO2018173546A1 - Dispositif et procédé de commande de puissance, et programme d'ordinateur - Google Patents

Dispositif et procédé de commande de puissance, et programme d'ordinateur Download PDF

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Publication number
WO2018173546A1
WO2018173546A1 PCT/JP2018/004902 JP2018004902W WO2018173546A1 WO 2018173546 A1 WO2018173546 A1 WO 2018173546A1 JP 2018004902 W JP2018004902 W JP 2018004902W WO 2018173546 A1 WO2018173546 A1 WO 2018173546A1
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WO
WIPO (PCT)
Prior art keywords
mode
control
power
bus line
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/004902
Other languages
English (en)
Japanese (ja)
Inventor
大輔 川本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to US16/487,364 priority Critical patent/US11063438B2/en
Priority to EP18770960.5A priority patent/EP3605769B1/fr
Priority to JP2019507427A priority patent/JP7147743B2/ja
Publication of WO2018173546A1 publication Critical patent/WO2018173546A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H02J1/10—Parallel operation of DC sources
    • H02J1/102—Parallel operation of DC sources being switching converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H02J1/10—Parallel operation of DC sources
    • H02J1/12—Parallel operation of DC generators with converters, e.g. with mercury-arc rectifier
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00004—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the power network being locally controlled
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/30—Charge provided using DC bus or data bus of a computer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/40—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries adapted for charging from various sources, e.g. AC, DC or multivoltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment

Definitions

  • the present disclosure relates to a power control apparatus, a power control method, and a computer program.
  • a DC / DC converter that controls the voltage of the power line is necessary when continuously performing power interchange of a plurality of DC / DC converters. Become. When the power supply from a certain DC / DC converter is completed and the control of the voltage of the power line is transferred to another DC / DC converter, a stable transfer of the voltage control right is required.
  • the present disclosure proposes a new and improved power control apparatus, power control method, and computer program capable of stably transferring voltage control rights when power is supplied between consumers through a DC power line.
  • a DC / DC converter connected to a DC bus line, a communication unit that communicates with another power control device, and the DC bus line between the other power control device.
  • a control unit that controls power transfer via the control unit, wherein the control unit controls at least a control mode and a droop rate, and the control mode is a first mode that controls a voltage of the DC bus line, A second mode for controlling a current flowing in the DC bus line, and a third mode for stopping power transfer, wherein the control unit changes the control mode from the first mode to the second mode or
  • a power control apparatus is provided that performs control to set the droop rate to a predetermined value other than 0%.
  • the DC bus line between the DC / DC converter connected to the DC bus line, the communication unit communicating with the other power control device, and the other power control device.
  • a control unit for controlling power transfer via the control unit, the control unit at least controls a control mode and a droop rate, the control mode is a first mode for controlling the voltage of the DC bus line, A second mode for controlling a current flowing through the DC bus line, and a third mode for stopping power transfer, wherein the control unit sets the control mode to the second mode or the third mode.
  • a power control apparatus is provided that performs control to set the droop rate to a predetermined value other than 0% when shifting to the first mode.
  • the processor controls power transfer via the DC bus line to and from another power control device through a DC / DC converter connected to the DC bus line, and the DC bus Controlling a control mode including a first mode for controlling a voltage of a line, a second mode for controlling a current flowing through the DC bus line, and a third mode for stopping power transfer; Controlling the droop rate of the DC / DC converter, and when the control mode is shifted from the first mode to the second mode or the third mode, the droop rate is other than 0%.
  • a power control method is provided in which the droop rate is switched to 0% after being set to a predetermined value.
  • the processor controls power transfer via the DC bus line to and from another power control device through a DC / DC converter connected to the DC bus line, and the DC bus Controlling a control mode including a first mode for controlling a voltage of a line, a second mode for controlling a current flowing through the DC bus line, and a third mode for stopping power transfer; Controlling the droop rate of a DC / DC converter, and when the control mode is shifted from the second mode or the third mode to the first mode, the droop rate is other than 0%.
  • a power control method is provided in which the droop rate is switched to 0% after setting to a predetermined value.
  • control of power transfer through the DC bus line with another power control device through a DC / DC converter connected to the DC bus line, and voltage of the DC bus line are controlled.
  • Controlling a control mode including a first mode for controlling a current, a second mode for controlling a current flowing through the DC bus line, and a third mode for stopping power transmission, and the DC / DC conversion.
  • a computer program for switching the droop rate to 0% after setting to a predetermined value is provided.
  • control of power transfer through the DC bus line with another power control device through a DC / DC converter connected to the DC bus line, and voltage of the DC bus line are controlled.
  • Controlling the droop rate of the vessel, and causing the computer to execute the control mode from the second mode or the third mode to the first mode, the droop rate is other than 0%.
  • a computer program is provided that switches the droop rate to 0% after setting to a predetermined value.
  • a new and improved power control apparatus, power control method, and computer capable of stably transferring a voltage control right when power is supplied between consumers through a DC power line.
  • a program can be provided.
  • FIG. 1 is an explanatory diagram illustrating a configuration example of a power supply system according to an embodiment of the present disclosure.
  • the configuration example of the power supply system according to the embodiment of the present disclosure will be described using FIG. 1.
  • the power supply system 1 according to an embodiment of the present disclosure illustrated in FIG. 1 is a system that allows power to be interchanged through a DC bus line.
  • the power supply system 1 according to an embodiment of the present disclosure includes power supply apparatuses 100, 200, 300, and 400.
  • the power supply apparatuses 100, 200, 300, and 400 are connected to each other by a communication line 500 and a DC bus line 600, respectively.
  • Each of the power supply devices 100, 200, 300, and 400 is a device that includes a battery inside or outside the device itself, and is an example of a power control device according to the present disclosure.
  • the power supply apparatuses 100, 200, 300, and 400 each include batteries 130, 230, 330, and 430 therein.
  • the power supply devices 100, 200, 300, and 400 store power in the batteries 130, 230, 330, and 430, and the power supply devices 100, 200, 300, and 400 from the batteries 130, 230, 330, and 430 that store the power. It is possible to supply power to devices connected to the.
  • the power supply devices 100, 200, 300, and 400 are connected to the power stored in the batteries 130, 230, 330, and 430, respectively, when the power supply from the commercial power supply is interrupted, for example.
  • By supplying the power to the devices 170, 270, 370, and 470 it is possible to prevent the power supply to the devices 170, 270, 370, and 470 that consume power from being interrupted.
  • Examples of the devices 170, 270, 370, and 470 that consume electric power include, for example, home appliances such as an air conditioner, a refrigerator, a television, and a personal computer (PC), as well as a vehicle that uses electricity as a power source such as an electric vehicle. May also be included.
  • one apparatus is connected to one power supply apparatus
  • this indication is not limited to the example which concerns.
  • a plurality of devices that consume power may be connected to one power supply device.
  • the power supply devices 100, 200, 300, and 400 when the power supply from the commercial power supply is interrupted and the power stored in the battery becomes a predetermined amount or less, from other power supply devices via the DC bus line 600.
  • This is a device having a function of receiving power supply and supplying power to another power supply device via the DC bus line 600.
  • the power supply device 100 includes an AC / DC converter 110, a DC / AC converter 120, a battery 130, a DC / DC converter 140, And a controller 150.
  • the AC / DC converter 110 converts AC power supplied from a commercial power source into DC power.
  • the AC / DC converter 110 outputs DC power converted from AC power to the DC / AC converter 120, the battery 130, and the DC / DC converter 140.
  • the DC / AC converter 120 converts direct current power into alternating current power and supplies the alternating current power to the device 170 connected to the power supply apparatus 100.
  • a power source of AC power supplied from the power supply apparatus 100 to the device 170 is a commercial power source or a battery 130.
  • the battery 130 is a chargeable / dischargeable storage battery, and has a capacity that can supply power to the device 170 for a predetermined time even when power supply from a commercial power supply is interrupted, for example.
  • the power supply device 100 operates to supply power to the device 170 by switching to power supply from the battery 130 when power supply from the commercial power supply is interrupted.
  • the battery 130 can store the DC power converted by the AC / DC converter 110, or may store the DC power generated by renewable energy such as solar power generation or wind power generation.
  • DC / DC converter 140 converts DC power converted by AC / DC converter 110 or DC power supplied from battery 130 into DC power that can be output to DC bus line 600.
  • the conversion to DC power that can be output to the DC bus line 600 will be described in detail later.
  • the controller 150 controls the operation of the power supply apparatus 100.
  • the controller 150 transmits another power supply device 200, 300 through the communication line 500. , 400, the operation of the power supply apparatus 100 is controlled so as to request the supply of power to the DC bus line 600.
  • the power supply devices 200, 300, and 400 when the power supply to the other power supply devices 200, 300, and 400 is interrupted and the capacity of the batteries 230, 330, and 430 becomes a predetermined amount or less, the power supply devices 200, 300, and 400
  • the controller 150 receives the power supply request transmitted to the DC bus line 600 transmitted through the communication line 500, the controller 150 transmits the DC power to the power supply devices 200, 300, and 400 that transmitted the power supply request if the power can be supplied.
  • the operation of the power supply apparatus 100 is controlled so that power is supplied through the bus line 600.
  • the controller 150 controls the operation of the power supply apparatus 100 to supply power through the DC bus line 600, whether the other power supply apparatuses 200, 300, and 400 have already obtained the control right of the DC bus line 600. Change the behavior depending on whether or not.
  • the right to control the DC bus line 600 refers to the right to set the voltage of the DC bus line 600.
  • the controller 150 controls the operation of the power supply apparatus 100 to supply power through the DC bus line 600 so that the rating of the DC bus line 600 is not exceeded.
  • the controller 150 indicates that the other power supply device 200, 300, 400 has acquired the control right for the DC bus line 600. Then, the operation of the power supply apparatus 100 is controlled to supply power through the DC bus line 600.
  • the controller 150 grants the control right for the DC bus line 600 to the other power supply apparatus 200, 300, Assuming that any one of 400 is obtained, the operation of the power supply apparatus 100 is controlled to supply power through the DC bus line 600.
  • the power supply devices 100, 200, 300, and 400 operate while switching between control modes having at least three states when power is transferred via the DC / DC converters 140, 240, 340, and 440.
  • This control mode controls the state of the DC / DC converter.
  • the control mode when the control right of the DC bus line 600 is obtained is referred to as a voltage mode.
  • a control mode in the case of passing a current or receiving a current from the DC bus line 600 is referred to as a current mode.
  • the control mode when the control right of the DC bus line 600 is not obtained and the power is not transferred from the DC bus line 600 is referred to as a stop mode.
  • the controller 150 determines whether or not power can be supplied using information such as the amount of power stored in the battery 130, the prediction of power consumption of the device 170 in the near future, and the prediction of the amount of power stored in the battery 130 in the near future. You may do it.
  • the controller 150 may determine whether or not power can be supplied based on the priority of the power supply apparatus that has requested power supply.
  • the power supply apparatus 200 includes an AC / DC converter 210, a DC / AC converter 220, a battery 230, a DC / DC converter 240, and a controller 250. Consists of.
  • a power supply apparatus 300 according to an embodiment of the present disclosure includes an AC / DC converter 310, a DC / AC converter 320, a battery 330, a DC / DC converter 340, and a controller 350. Is done.
  • a power supply device 400 according to an embodiment of the present disclosure includes an AC / DC converter 410, a DC / AC converter 420, a battery 430, a DC / DC converter 440, and a controller 450. Is done.
  • FIG. 2 is an explanatory diagram illustrating a functional configuration example of the controller 150 included in the power supply apparatus 100 according to the embodiment of the present disclosure.
  • a functional configuration example of the controller 150 included in the power supply apparatus 100 according to the embodiment of the present disclosure will be described with reference to FIG.
  • the controller 150 includes a power determination unit 151, a communication unit 152, and a power control unit 153.
  • the power determination unit 151 determines, for example, whether power supply from the commercial power source to the power supply apparatus 100 is interrupted. The power determination unit 151 determines whether or not there is an interruption in power supply from the commercial power source, for example, by detecting a voltage value of a predetermined power line. In addition, for example, when the power supply from the commercial power supply is interrupted, the power determination unit 151 determines whether the capacity of the battery 130 has become a predetermined amount or less with the power supply from the battery 130 to the device 170. When the power determination unit 151 determines that the capacity of the battery 130 has decreased to a predetermined amount or less due to the interruption of power supply from the commercial power source, the power determination unit 151 transmits a power supply request from the communication unit 152 through the communication line 500.
  • the power determination unit 151 determines whether power can be supplied to the apparatus that transmitted the power supply request.
  • the communication unit 152 operates as a power supply candidate through the communication line 500 so that the device returns a response.
  • the communication unit 152 transmits various information related to power transmission and reception through the communication line 500.
  • the communication unit 152 receives various information related to power transmission and reception through the communication line 500.
  • the communication unit 152 transmits the other power supply devices 200 and 300 through the communication line 500. , 400 to send a power request.
  • the communication unit 152 selects a power supply device that receives power supply in accordance with permission of power supply from the other power supply devices 200, 300, and 400, and sends the selected power supply device to the selected power supply device through the communication line 500. The fact that it has been selected as a power supplier is transmitted.
  • the communication unit 152 transmits a power request transmitted when it is determined that the power supply from the commercial power supply is interrupted in the other power supply apparatuses 200, 300, and 400 and the battery capacity is reduced to a predetermined amount or less. Receive.
  • the communication unit 152 determines that the device is a power supply candidate. Send information to reply.
  • the communication unit 152 may include information such as a charge at the time of power supply, a time until the start of supply, a supplyable time, a past supply record to the apparatus that requested the power supply, etc. .
  • the other received power supply devices 200, 300, and 400 determine the power supply candidate based on the information. I can do it.
  • the power request transmitted when the power supply from the commercial power supply is interrupted and the capacity of the battery 130 is reduced to a predetermined amount or less includes, for example, the requested power amount and the time period for requesting the power supply. , Information on desired costs, past power reception results, and the like can be included.
  • the response to the power supply may include, for example, the amount of power that can be supplied, the time during which power can be transmitted, information on the cost of power, the past supply record to the device that requested the power supply, and the like.
  • the power supply devices 100, 200, 300, and 400 can determine a power supply source, a supply destination, a supply time, and the like by exchanging information when the power is exchanged through the DC bus line 600. I can do it.
  • the communication unit 152 may execute encryption of information and decryption of the encrypted information.
  • an encryption method such as a common key encryption method or a public key encryption method can be used.
  • the information transmitted and received by the communication unit 152 is encrypted, inconvenience due to wiretapping of information by a malicious third party can be avoided.
  • authentication processing Prior to transmission of information from the communication unit 152 and reception of information at the communication unit 152, authentication processing may be performed in advance with the other party. By performing authentication processing with the other party in advance, inconvenience due to impersonation or the like can be avoided. Needless to say, the encryption method and the authentication method are not limited to specific methods.
  • the power control unit 153 controls power transmission from the DC / DC converter 140 through the DC bus line 600 and power reception by the DC / DC converter 140. Control of power transmission / reception by the power control unit 153 is performed based on information transmitted or received by the communication unit 152.
  • the power control unit 153 determines whether or not power can be supplied when power supply is transmitted from another power supply device, the amount of power stored in the battery 130, and the power consumption of the device 170 in the near future. You may judge using information, such as prediction.
  • FIG. 2 shows an example of the functional configuration of the controller 150 included in the power supply apparatus 100, but it is included in the controller 250 included in the power supply apparatus 200, the controller 350 included in the power supply apparatus 300, and the power supply apparatus 400.
  • the controller 450 also has a configuration similar to that shown in FIG.
  • the controller 150 may be comprised from several different controllers, such as a power control processor and a communication processor, for example.
  • each or some of the functions of the power determination unit 151, the communication unit 152, and the power control unit 153 may be realized by different controllers.
  • the voltage control of the DC bus line 600 is performed by switching another DC / DC converter that continues the power interchange to the voltage mode and operating. There are two DC / DC converters that are temporarily in voltage mode when the voltage control right is transferred to other DC / DC converters.
  • the DC bus line 600 cannot be set to the target voltage due to the voltage drop due to the wiring resistance of the DC bus line 600 or the error of the set value of the device, the DC / DC converter continues to flow the current up to the current limit value. End up.
  • FIG. 3 is an explanatory diagram for explaining the existing droop control.
  • FIG. 3 shows a graph in which the horizontal axis represents the current flowing through the DC bus line 600 and the vertical axis represents the voltage of the DC bus line 600.
  • the voltage becomes V_0 at the reference load (current I_0), but when the load increases and the current becomes I, the voltage of the DC bus line 600 drops to V.
  • two voltage sources are operated in parallel by this control, for example, when the current from one voltage source increases, the voltage decreases, and as a result, the current flows from another voltage source. By operating the voltage source in this way, a large current does not flow from one voltage source, and the current can be balanced passively.
  • FIG. 4 is an explanatory diagram for explaining P2P active power accommodation using the DC bus line 600.
  • the DC / DC converter 140 of the power supply apparatus 100 is operated in the voltage mode
  • the DC / DC converters 240, 340, and 440 of the other power supply apparatuses 200, 300, and 400 are operated in the current mode.
  • FIG. 140 the DC / DC converter 140 of the power supply apparatus 100 is operated in the voltage mode
  • the DC / DC converters 240, 340, and 440 of the other power supply apparatuses 200, 300, and 400 are operated in the current mode.
  • it is possible to realize a certain amount of power interchange by using a voltage mode DC / DC converter to keep the voltage of the DC bus line 600 constant without using droop control.
  • the DC / DC converter 140 is “DCDC1”
  • the DC / DC converter 240 is “DCDC2”
  • the DC / DC converter 340 is “DCDC3”
  • the DC / DC converter 440 is “ Also referred to as “DCDC4”.
  • This method is characterized in that only DC / DC converters participating in power interchange are operating, and when the power interchange of itself ends, the power efficiency is increased by stopping the operation of the DC / DC converter. It becomes possible.
  • this embodiment when stopping the operation of the DC / DC converter of the voltage mode power supply apparatus, it is necessary to transfer the voltage control right of the DC bus line 600 to another power supply apparatus. It is necessary to consider in implementation that the system operation may become unstable during this movement.
  • FIG. 5 is a flowchart showing an operation example of the DC / DC converter of each power supply apparatus.
  • 6A to 6D are explanatory diagrams showing states of the respective power supply apparatuses corresponding to the respective operations in the operation example shown in FIG.
  • the control mode of the power supply apparatus 100 is the voltage mode and operates without droop control (with a droop rate of 0%), and the control modes of the power supply apparatuses 200, 300, and 400 are all Operating in current mode.
  • FIG. 6A shows that the control mode of the power supply apparatus 100 is the voltage mode and operates without droop control (with a droop rate of 0%), and the control modes of the power supply apparatuses 200, 300, and 400 are all current modes.
  • the DC / DC converter 140 is changed from the DC / DC converter 140 to the DC / DC converter 240 by an agreement between the power supply apparatuses 100 and 200 in advance, and the DC / DC converter is agreed by an agreement between the power supply apparatuses 300 and 400. Assume that power interchange is performed from 340 to DC / DC converter 440, respectively.
  • the power control unit 153 determines whether or not a predetermined condition for power accommodation is satisfied (step S11). If the predetermined condition for termination of power accommodation is satisfied, the power supply apparatus 100 transmits a power accommodation stop request to the power supply apparatus 200. The power supply apparatus 200 shifts the control mode to the stop mode based on the reception of the power interchange stop request (step S12). FIG. 6B shows that the control mode of the power supply apparatus 200 has shifted to the stop mode.
  • the control mode of the power supply device 300 is shifted from the current mode to the voltage mode (step S13).
  • FIG. 6C shows an example in which the control mode of the power supply apparatuses 100 and 300 is the voltage mode.
  • the control mode of the power supply apparatus 100 is shifted from the voltage mode to the stop mode (step S14).
  • FIG. 6D shows that the control mode of the power supply apparatus 100 has shifted to the stop mode.
  • step S13 there are two DC / DC converters operating in the voltage mode, and the DC / DC converters 140 and 340 are operating in parallel.
  • One or both of the DC / DC converters operating in the voltage mode cannot control the voltage of the DC bus line 600 to the target voltage due to the influence of the voltage drop due to the wiring resistance or the error of the set value of the device, and the current limit Attempting to pass current up to a value may temporarily cause the system to become unstable.
  • FIG. 7 is an explanatory diagram showing an example of a state in which two DC / DC converters operating in the voltage mode exist.
  • a potential difference is generated between points A and B of the DC bus line 600 due to the current flowing through the DC bus line 600 and the wiring resistance of the DC bus line 600.
  • it is necessary to set the voltage in consideration of the potential difference between the points A and B of the DC bus line 600.
  • all of the current of the DC bus line 600, the resistance value of the DC bus line 600, the voltage setting error of the DC / DC converter, and the like, which cause the potential difference, are monitored. It is desirable to implement.
  • FIG. 8 is a flowchart showing an operation example of the DC / DC converter of each power supply apparatus according to the present embodiment.
  • 9A to 9F are explanatory diagrams showing states of the respective power supply apparatuses corresponding to the respective operations in the operation example shown in FIG.
  • the control mode of the power supply apparatus 100 is the voltage mode and operates without droop control (with a droop rate of 0%), and the control modes of the power supply apparatuses 200, 300, and 400 are all Operating in current mode.
  • the control mode of the power supply apparatus 100 is the voltage mode and operates without droop control (with a droop rate of 0%)
  • the control modes of the power supply apparatuses 200, 300, and 400 are all Operating in current mode.
  • the control mode of the power supply apparatus 100 is the voltage mode and operates without droop control (with a droop rate of 0%), and the control modes of the power supply apparatuses 200, 300, and 400 are all current modes.
  • the DC / DC converter 140 is changed from the DC / DC converter 140 to the DC / DC converter 240 by an agreement between the power supply apparatuses 100 and 200 in advance, and the DC / DC converter is agreed by an agreement between the power supply apparatuses 300 and 400. Assume that power interchange is performed from 340 to DC / DC converter 440, respectively.
  • the power control unit 153 determines whether or not a predetermined condition for power accommodation is satisfied (step S101). If the predetermined condition for termination of power accommodation is satisfied, the power supply apparatus 100 transmits a power accommodation stop request to the power supply apparatus 200. The power supply apparatus 200 shifts the control mode to the stop mode based on the reception of the power interchange stop request (step S102). FIG. 9B shows that the control mode of the power supply apparatus 200 has shifted to the stop mode.
  • the control right of the DC bus line 600 is passed from the DC / DC converter 140 to the DC / DC converter 340 in response to the request for the control right from the power supply apparatus 300.
  • the power supply apparatus The control mode 100 is shifted to the voltage mode in which the droop control is performed at the droop rate ⁇ % (step S103).
  • FIG. 9C shows that the control mode of the power supply apparatus 100 has shifted to the voltage mode in which the droop control is performed at the droop rate ⁇ %.
  • the controller 150 When the control mode of the power supply apparatus 100 shifts to the voltage mode in which the droop control is performed at the droop rate ⁇ %, the controller 150 performs the droop control to the power supply apparatus 300 at the droop rate ⁇ %. Notify that the voltage mode has been entered.
  • the power supply device 300 Upon receiving notification that the control mode of the power supply device 100 has shifted to the voltage mode in which the droop control is performed with the droop rate ⁇ %, the power supply device 300 subsequently changes the control mode of the power supply device 300 to the droop rate ⁇ . % Is shifted to a voltage mode in which droop control is performed (step S104).
  • FIG. 9D shows that the control mode of the power supply apparatus 300 has shifted to the voltage mode in which the droop control is performed at the droop rate ⁇ %.
  • the controller 350 performs the droop control to the power supply device 100 at the control mode of the power supply device 300 at the droop rate ⁇ %. Notify that the voltage mode has been entered.
  • the power supply device 100 subsequently sets the control mode of the power supply device 100 at the droop rate ⁇ %.
  • the voltage mode for performing the droop control is shifted to the stop mode (step S105).
  • FIG. 9E shows that the control mode of the power supply apparatus 100 has shifted to the stop mode. At this time, the power supply apparatus 100 sets the droop rate to 0%.
  • step S106 When the control mode of the power supply apparatus 100 is shifted to the stop mode, the control mode of the power supply apparatus 300 is subsequently shifted to the voltage mode in which the droop control is not performed (the droop rate is 0%) (step S106).
  • FIG. 9F shows that the control mode of the power supply apparatus 300 has shifted to the voltage mode in which the droop control is not performed (the droop rate is 0%).
  • FIG. 10 is an explanatory diagram showing parallel operation in voltage mode using droop control.
  • FIG. 11 is an explanatory diagram for explaining the droop control, and shows a graph in which the horizontal axis represents the current flowing through the DC bus line 600 and the vertical axis represents the voltage of the DC bus line 600.
  • FIG. 12 is an explanatory diagram showing a setting example of the droop rate of the DC / DC converter, and shows a graph in which the horizontal axis represents the current flowing through the DC bus line 600 and the vertical axis represents the voltage of the DC bus line 600. .
  • Each DC / DC converter can set the droop rate, that is, the slope of the output voltage with respect to the outflow or inflow current, so that the maximum control voltage is at the maximum inflow current and the minimum control voltage is at the maximum outflow current.
  • the droop rate (slope) of the DC / DC converter can be set. By setting the droop rate (slope) in this way, it is possible to realize voltage mode parallel operation within the control range of each DC / DC converter.
  • FIG. 13 is an explanatory diagram showing another setting example of the droop rate of the DC / DC converter, and shows a graph in which the horizontal axis represents the current flowing through the DC bus line 600 and the vertical axis represents the voltage of the DC bus line 600. ing.
  • the droop rate (slope) of the DC / DC converter is set in consideration of a voltage drop when a current flows through the DC bus line 600 in addition to the above-described outflow / inflow current.
  • the droop rate (slope) of the DC / DC converter is set in consideration of the voltage drop, the voltage within the control range of each DC / DC converter is taken into consideration in consideration of the voltage drop of the DC bus line 600. It becomes possible to realize parallel operation of modes.
  • FIG. 14 is an explanatory diagram illustrating a display example for confirming in which operation mode the power supply device is operating.
  • the display U1 corresponds to the state shown in FIG. 9A, and shows that power interchange is performed from the power supply apparatus 100 to the power supply apparatus 200 and from the power supply apparatus 300 to the power supply apparatus 400. It is a manifestation.
  • the display U2 corresponds to the state shown in FIG. 9C, and the state in which the control mode of the power supply apparatus 100 has shifted from the voltage mode in which the droop control is not performed to the voltage mode in which the droop control is performed at the droop rate ⁇ %. It is the one that expressed.
  • the display U3 corresponds to the state shown in FIG. 9D and shows a state in which the control mode of the power supply apparatus 300 has shifted from the current mode to the voltage mode in which the droop control is performed at the droop rate ⁇ %. It is.
  • the display U4 corresponds to the state shown in FIG. 9E and shows that the control mode of the power supply apparatus 100 has shifted from the voltage mode in which the droop control is performed at the droop rate ⁇ % to the stop mode. is there.
  • the display U5 corresponds to the state shown in FIG. 9F, and the control mode of the power supply apparatus 300 has shifted from the voltage mode in which the droop control is performed at the droop rate ⁇ % to the voltage mode in which the droop control is not performed. It shows the situation.
  • Such a display can be displayed on a display device such as a display of a device directly connected to the communication line 500 or indirectly through the Internet or the like.
  • the power supply apparatus operating in the voltage mode has shifted to the stop mode after passing the control right of the DC bus line 600 to another power supply apparatus, but operates in the voltage mode.
  • the power supply apparatus that has been used may transfer to the current mode without transferring to the stop mode after passing the control right of the DC bus line 600 to another power supply apparatus.
  • FIG. 15 is a flowchart showing an operation example of the DC / DC converter of each power supply apparatus according to the present embodiment.
  • 16A to 16F are explanatory diagrams showing the states of the DC / DC converters corresponding to the operations in the operation example shown in FIG.
  • the control mode of the power supply apparatus 100 is the voltage mode and operates without droop control (with a droop rate of 0%), and the power supply apparatus 200 operates in the current mode.
  • all the control modes of the electric power supply apparatus 400 were stop modes.
  • the power supply apparatus 100 operates in the voltage mode and operates without droop control (at a droop rate of 0%), the power supply apparatus 200 operates in the current mode, and supplies power.
  • the control mode of the devices 300 and 400 is the stop mode.
  • it is assumed that power is supplied from the DC / DC converter 140 to the DC / DC converter 240 in advance by an agreement between the power supply apparatuses 100 and 200.
  • step S111 power interchange from the DC / DC converter 340 to the DC / DC converter 440 is started by exchanging a predetermined message between the power supply apparatuses 300 and 400 (step S111).
  • the start of power interchange from the DC / DC converter 340 to the DC / DC converter 440 is transmitted to the power supply apparatus 100 having the control right of the DC bus line 600.
  • the control mode is shifted to the voltage mode in which the droop control is performed with the droop rate ⁇ % (step S112).
  • FIG. 16B shows that the control mode of the power supply apparatus 100 has shifted to the voltage mode in which the droop control is performed at the droop rate ⁇ %.
  • the controller 150 When the control mode of the power supply apparatus 100 shifts to the voltage mode in which the droop control is performed at the droop rate ⁇ %, the controller 150 performs the droop control to the power supply apparatus 300 at the droop rate ⁇ %. Notify that the voltage mode has been entered.
  • the power supply device 300 receives notification that the control mode of the power supply device 100 has shifted to the voltage mode in which the droop control is performed at the droop rate ⁇ %, the voltage mode in which the droop control is performed at the same droop rate ⁇ %.
  • the control mode is shifted to (Step S113).
  • FIG. 16C shows that the control mode of the power supply apparatus 300 has shifted to the voltage mode in which the droop control is performed at the droop rate ⁇ %.
  • the controller 350 performs the droop control to the power supply device 100 at the control mode of the power supply device 300 at the droop rate ⁇ %. Notify that the voltage mode has been entered.
  • the power supply apparatus 100 receives notification that the control mode of the power supply apparatus 300 has shifted to the voltage mode in which the droop control is performed at the droop rate ⁇ %, the power supply apparatus 100 subsequently starts the current from the voltage mode in which the droop control is performed at the droop rate ⁇ %.
  • the control mode is shifted to the mode (step S114).
  • FIG. 16D shows that the control mode of the power supply apparatus 100 has shifted to the current mode.
  • the controller 150 When the control mode of the power supply apparatus 100 shifts to the current mode, the controller 150 notifies the power supply apparatus 300 that the control mode of the power supply apparatus 100 has shifted to the current mode.
  • the power supply device 300 When receiving the notification that the control mode of the power supply device 100 has shifted to the current mode, the power supply device 300 subsequently shifts the control mode to the voltage mode in which the droop control is not performed (the droop rate is 0%) (Ste S115).
  • FIG. 16E shows that the control mode of the power supply apparatus 300 has shifted to the voltage mode in which the droop control is not performed (the droop rate is 0%).
  • the controller 350 When the control mode of the power supply apparatus 300 shifts to the voltage mode in which the droop control is not performed (the droop rate is 0%), the controller 350 notifies the power supply apparatus 400 that preparation for power interchange has been completed.
  • the power supply device 400 receives a notification from the controller 350 that preparation for power interchange has been completed, the power supply device 400 shifts the control mode of the power supply device 400 to the current mode (step S116).
  • FIG. 16F shows that the control mode of power supply device 400 has shifted to the current mode.
  • Such a case is effective when, for example, the power supply system 1 includes a DC / DC converter having a large power capacity.
  • the DC grid current imbalance absorbability is increased, and it is possible to improve the stability when a failure occurs. Even in such a case, it is possible to stably transfer the voltage control right of the DC bus line 600 by performing the transition of the control mode using the droop control as shown in FIG.
  • FIG. 17 is an explanatory diagram illustrating a state transition diagram of the control mode of the power supply apparatus.
  • FIG. 17 shows the state transition in the case where the voltage control right of the DC bus line 600 is transferred to another power supply device as shown in FIG. FIG.
  • the control mode of the power supply apparatus is a stop mode, and the droop rate is 0% (this state is referred to as a “stop state”).
  • the control mode is set to the current mode (droop rate 0%) (this state is referred to as “current”
  • the voltage mode in which the droop control is not performed (the droop rate is 0%) (this state is referred to as “voltage reference”).
  • the control mode is shifted to “control state”.
  • transition state When the power supply device in the voltage reference control state completes the power interchange and passes the control right of the DC bus line 600 to another power supply device, the voltage mode in which the droop control is performed at the droop rate ⁇ % (this state) Is referred to as “transition state”), and then transitions to the stop state.
  • the power supply device may directly shift to the stopped state without going through the transition state.
  • the power supply apparatus in the current control state receives the control right of the DC bus line 600 from another power supply apparatus, it shifts to the transition state once and then shifts to the voltage reference control state.
  • FIG. 18 is an explanatory diagram showing a state transition diagram of the power supply apparatus according to another embodiment. As shown in FIG. 18, as shown in FIG. 15, after the control right of the DC bus line 600 is transferred to another power supply device, the control mode of the own device is shifted to either the stop mode or the current mode. It is a state transition diagram in the case where it can do.
  • FIG. 19 is a flowchart illustrating an operation example of the power supply apparatus (for example, the power supply apparatus 100) according to the embodiment of the present disclosure.
  • FIG. 19 shows an example of control of the control mode of the power supply apparatus when the control right of the DC bus line 600 is moved between the power supply apparatuses.
  • the series of operations shown below are executed by the controller 150, particularly by the power control unit 153 unless otherwise specified.
  • the power supply device When performing the control mode, the power supply device first determines whether or not it participates in power interchange through the DC bus line 600 (step S121). If it is not participating in the power interchange through the DC bus line 600 (step S121, No), the power supply apparatus ends the process as it is. On the other hand, if the power supply device participates in power interchange through the DC bus line 600 (step S121, Yes), the power supply device determines whether the power supply device is in a voltage mode (step S122).
  • step S122 determines whether to transfer the voltage control right of the DC bus line 600 to another power supply apparatus (step S123).
  • the power supply device ends the process as it is.
  • the power supply device controls the power supply device to a voltage mode in which the droop control is performed at the droop rate ⁇ %.
  • step S124 The mode is changed (step S124), and the control waits until the control mode of the power supply apparatus to which the voltage control right of the DC bus line 600 is transferred becomes a voltage mode in which the droop control is performed with the droop rate ⁇ % (step S125).
  • step S125, Yes When the control mode of the power supply device to which the voltage control right of the DC bus line 600 is moved becomes a voltage mode in which the droop control is performed with the droop rate ⁇ % (step S125, Yes), the power supply device passes through the DC bus line 600. It is determined whether or not to continue power accommodation (step S126). When continuing the power interchange through the DC bus line 600 (step S126, Yes), the power supply device shifts the control mode to the current mode (step S127). When continuing the power interchange through the DC bus line 600 (step S126, No), the power supply device shifts the control mode to the stop mode (step S128).
  • step S122 determines whether to transfer the voltage control right of the DC bus line 600 from another power supply device. (Step S129). When the voltage control right of the DC bus line 600 is not transferred from another power supply device (No in step S129), the power supply device ends the process as it is. On the other hand, when the voltage control right of the DC bus line 600 is transferred from another power supply apparatus (Yes in step S129), the power supply apparatus controls the power supply apparatus from which the voltage control right of the DC bus line 600 is transferred. Wait until the mode becomes a voltage mode in which the droop control is performed with the droop rate ⁇ % (step S130).
  • the power supply device sets the control mode to the droop rate ⁇ . % Is shifted to a voltage mode in which droop control is performed (step S131). Subsequently, the power supply apparatus waits until the control mode of the source power supply apparatus to which the voltage control right of the DC bus line 600 is moved becomes the current mode or the stop mode (step S132), and the voltage control right of the DC bus line 600 is set.
  • the control mode of the power supply apparatus of the movement source is the current mode or the stop mode (step S132, Yes)
  • the control mode is shifted to the voltage mode in which the droop control is not performed (step S133).
  • the power supply device performs the above-described series of operations, thereby stably transferring the voltage control right of the DC bus line 600 between the power supply devices connected to the DC bus line 600. Is possible.
  • the same droop rate is set when the voltage control right is moved between the source and the destination of the voltage control right of the DC bus line 600, but the present disclosure is not limited to such an example. . Different droop rates may be set when the voltage control right is transferred between the transfer source and the transfer destination of the voltage control right.
  • the droop rate having a predetermined value is set only when the voltage control right of the DC bus line is transferred from one power supply apparatus to another power supply apparatus.
  • a power supply apparatus that stably moves the voltage control right is provided.
  • each step in the processing executed by each device in this specification does not necessarily have to be processed in chronological order in the order described as a sequence diagram or flowchart.
  • each step in the processing executed by each device may be processed in an order different from the order described as the flowchart, or may be processed in parallel.
  • the communication line 500 may be wired or wireless.
  • the communication line 500 may be configured by a so-called mesh network.
  • the case where the communication line 500 and the DC bus line 600 are different from each other is shown, but the present disclosure is not limited to such an example.
  • information related to power transmission and reception may be superimposed on the DC bus line 600. By superimposing information on power transmission and reception on the DC bus line 600, the communication line 500 can be omitted from the power supply system.
  • a DC / DC converter connected to the DC bus line; A communication unit that communicates with other power control devices; A control unit for controlling power exchange with the other power control device via the DC bus line; With The control unit controls at least a control mode and a droop rate,
  • the control mode includes a first mode for controlling the voltage of the DC bus line, a second mode for controlling a current flowing in the DC bus line, and a third mode in which power transfer is stopped,
  • the control unit performs control to set the droop rate to a predetermined value other than 0% when the control mode is shifted from the first mode to the second mode or the third mode. Power control device.
  • the control unit When the control unit receives the request for transferring the control right of the DC bus line from another power control device when the control mode is the first mode, the control unit changes the control mode to the first mode.
  • the control unit sets the predetermined value of the droop rate to a value different from that of the other power control apparatus.
  • control unit When the control unit confirms that the control mode of the other power control apparatus is the first mode, the control unit switches the control mode to the second mode or the third mode, and sets the droop rate.
  • the power control device according to any one of (2) to (4), wherein the power control device is switched to 0%.
  • a DC / DC converter connected to the DC bus line; A communication unit that communicates with other power control devices; A control unit for controlling power exchange with the other power control device via the DC bus line; With The control unit controls at least a control mode and a droop rate,
  • the control mode includes a first mode for controlling the voltage of the DC bus line, a second mode for controlling a current flowing in the DC bus line, and a third mode in which power transfer is stopped,
  • the control unit performs control to set the droop rate to a predetermined value other than 0% when the control mode is shifted from the second mode or the third mode to the first mode. Power control device.
  • the control unit transmits a request to transfer the control right of the DC bus line to another power control device that has obtained control right of the DC bus line, and the other power control device transmits the droop When it is confirmed that the rate is set to a predetermined value other than 0%, the control mode is changed to the first mode, and the droop rate is set to a predetermined value other than 0. Power control device.
  • control unit When the control unit confirms that the control mode of the other power control device is the second mode or the third mode, the control unit switches the control mode to the first mode, and sets the droop rate.
  • the power control device according to any one of (7) to (9), wherein the power control device is switched to 0%.
  • Processor Controlling power exchange via the DC bus line with another power control device through a DC / DC converter connected to the DC bus line; Controlling a control mode including a first mode for controlling the voltage of the DC bus line, a second mode for controlling a current flowing through the DC bus line, and a third mode for stopping power transfer; , Controlling the droop rate of the DC / DC converter; Including When the control mode is shifted from the first mode to the second mode or the third mode, the droop rate is set to 0% after the droop rate is set to a predetermined value other than 0%. Switching power control method.
  • a computer program that switches.

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  • Business, Economics & Management (AREA)
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Abstract

Le problème décrit par la présente invention est de fournir un dispositif de commande de puissance pouvant décaler de manière stable une tension réglée. La solution de l'invention porte sur un dispositif de commande de puissance pourvu d'une unité de communication permettant la communication entre un convertisseur CC/CC connecté à une ligne de bus CC et un autre dispositif de commande de puissance, et d'une unité de commande servant à commander le transfert de puissance entre le dispositif de commande de puissance et l'autre dispositif de commande de puissance par l'intermédiaire de la ligne de bus CC, l'unité de commande commandant au moins un mode de commande et un taux d'affaissement, le mode de commande présentant un premier mode permettant de réguler la tension de la ligne de bus CC, un deuxième mode permettant de réguler le courant circulant à travers la ligne de bus CC, et un troisième mode dans lequel le transfert de puissance est arrêté, et lorsque le mode de commande est passé du premier au deuxième ou troisième mode, l'unité de commande effectue une commande destinée à régler le taux d'affaissement sur une valeur prédéterminée autre que 0 %.
PCT/JP2018/004902 2017-03-23 2018-02-13 Dispositif et procédé de commande de puissance, et programme d'ordinateur Ceased WO2018173546A1 (fr)

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JP2019507427A JP7147743B2 (ja) 2017-03-23 2018-02-13 電力制御装置、電力制御方法及びコンピュータプログラム

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JPWO2021161464A1 (fr) * 2020-02-13 2021-08-19

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US20200059100A1 (en) 2020-02-20
EP3605769B1 (fr) 2022-03-30
JP7147743B2 (ja) 2022-10-05
JPWO2018173546A1 (ja) 2020-01-23
US11063438B2 (en) 2021-07-13
EP3605769A1 (fr) 2020-02-05

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